A very small Juvenile Many-Spotted Sweetlips (Plectorhinchus chaetodonoides) swims with a strange, jerky, undulating motion.
It is unusual to see one facing side on, as they normally swim facing the reef or their cover, showing only a fast moving tail to predators. They are frustrating to photograph, and their unusual motion protects them from many predators who otherwise would make a meal of this small juvenile fish.
Image taken on a small reef on a shore dive from Kata Beach off the coast of Phuket, Thailand in the Andaman Sea.